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taurus [48]
3 years ago
5

Evaluate -x+4x when x=-2

Mathematics
2 answers:
snow_lady [41]3 years ago
8 0

Use the substitution method

-x+4x  when x=-2

-(-2)+4(-2)  Positive number * ( multiplying)Negative number=Negative number

2-8

=-6

Answer is -6

xenn [34]3 years ago
3 0
The answer is -6. The explanation is shown in the picture.

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I really need help finding the solution!!
Mrac [35]

Answer:

-0.5 is not a solution

2 is a solution

Step-by-step explanation:

To check if something is a solution of the equation, you need to substitute the value in place of the variable

15 + 2y = -12 - 4y

15 + 2(-0.5) = -12 - 4(-0.5)

15 - 1 = -12 + 2

14 ≠ -10 ∴ -0.5 is not a solution

5 - 2(3x + 5) = 3 - 10x

5 - 2[3(2) + 5] = 3 - 10(2)

5 - 2(6 + 5) = 3 - 10(2)

5 - 12 - 10 = 3 - 120

-17 = -17 ∴ 2 is a solution

3 0
2 years ago
5x + 3y, when x = 4, and y=-3​
Pepsi [2]

Answer:

5x+3y, when x=4 and y= -3

5(4)+3(-3)=

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11

Step-by-step explanation:

Hope this helps. :)

6 0
3 years ago
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14 and the remainder is 3
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Can you please help me with this problem
Anna35 [415]

Answer:

$1.15

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